>>"if it's not okay to use, then i think it should have been taken out during the summer." >> reporter:mcmillan says after using the needles, the students wiped them with alcohol swabs so the next class could use them. >>"i had to monitor the class. i had to walk around the room. it's not like i could lollygag." >>"but was alcohol enough?" >>"from my prior knowledge, i thought it was." >> reporter:she gave students who declined the blood test an alternate assignment. school officials say a concerned student left class left to call her parents, who alerted assistant principals. >>"and they were like 'stop the lab! stop the lab!'" >> reporter:by the end of the day, mcmillan was out of a job. >>"we don't want students to be, first of all, sharing a needle, and second, to have any type of human blood in the classroom."